RIPng is an extension of RIP developed for support of IPv6. Here are some of its features:
- just like RIP for IPv4, it uses hop count as the metric
- sends updates every 30 seconds
- RIPng messages use the UDP port 521 and the multicast address of FF02::9
The configuration of RIPng is requires at least two steps:
1. enable RIPng using the global configuration command ipv6 router rip tag. The tag is used to differentiate between multiple RIP processes. It does not have to be the same on all routers in order to exchange routing information..
2. enable the routing protocol on the interface using the ipv6 rip tag enable. The tag has to match the one used in the ipv6 router rip tag command.
Here is an example:
We have done a similar configuration on the second router. To verify that routers are indeed exchanging route information using RIPng we can use the show ipv6 route command:
In the picture above, we can see that the router has received a route to the network 2001:BBBB:CCCC:DDDD::/64.
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